PURPOSE: A slide mode core retainer with a sampling device, capable of sample lost prevention, is provided to open to the tip of the sampling device so that sediment can flow and to close while collecting sample. CONSTITUTION: A slide mode core retainer with a sampling device comprises a catcher holder(20) and a catcher(30). The catcher holder is detachably combined in the tip-end part of a sample tube(10). The catcher is installed on the tip-end inner circumference of the catcher holder. The catcher holder comprises an on-off control member(40) controlling the opening and closing of the catcher.
